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Physics · PYQ NEET UG 2019(2)

हिन्दी

An equiconvex lens has power P. It is cut into two symmetrical halves by a plane containing the principal axis. The power of one part will be,

  1. P
  2. 0
  3. \( \frac{P}{2} \)
  4. \( \frac{P}{4} \)

Correct answer · Option 1

P

Explanation

When a lens is cut along the principal axis, the radius of curvature of the cut surface remains the same, hence the focal length and power of each part remain unchanged (equal to P).

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